Circle Terms
Finding Radius
Finding Diameter
Finding Circumference
Finding Area
100
The distance from the center of a circle to the outside, also half of the diameter.
Radius
100
The Diameter of this circle is 25cm, what is the radius?
12.5cm
100
The radius of this circle is given, what is the diameter?
10cm
100
The diameter of the circle is 19cm, calculate the circumference.
59.69 cm
100
Calculate the area
78.5 in2
200
The longest part in a circle. From one edge to the other through the center.
Diameter
200
The diameter of the circle is 420km, what is the radius?
210km
200
The radius of the circle is given, what is the diameter?
42cm
200
Calculate the circumference. (units = feet)
81.68 ft
200
The radius of the eye is 4mm, what is the area?
50.24mm2
300
The distance around the circle.
Circumference
300
What is the radius of the ferris wheel?
60m
300
Find the diameter.
5 ft
300
Calculate the circumference. (units = km)
47.12km
300
What is the area of the tabletop?
7.065 ft2
400
The total amount of space inside of a circle
Area
400
What is the radius?
6.5 ft
400
What's the diameter?
13 ft
400
496.12 inches
400
The diameter of the pizza is 30 cm, what is the area?
706.5 cm2
500
What is the number we use for Pi?
500
What is the radius?
1.27 m
500
Find the diameter.
4.22 mm
500
The diameter of the playground is 194.68 feet. What is the circumference?
118,909.16 ft
500
What's the area?
239.86 in2